VX-120 O
PERATING
M
ANUAL
26
You also can press the
MONI
key during Tone Scanning to listen to the (muted) signal
from the other station. When you release the
MONI
key, Tone Scanning will resume after
about a second. Tone Scanning works either in the VFO or Memory modes.
EPCS
(
E
NHANCED
P
AGING
& C
ODE
S
QUELCH
)
The
VX-120
includes an Enhanced CTCSS tone encoder/decoder and a dedicated micropro-
cessor providing paging and selective calling features. This allows you to place a call to a
specific station (Paging), and to receive calls of your choice directed only to you (Code Squelch).
The paging and code squelch systems use two pairs of (alternately switched) CTCSS tones
which are stored in the pager memories. Basically, your receiver remains silent until it
receives the CTCSS tone pair that matches those stored in the Receiving Pager Memory.
The squelch then opens so the caller is heard, and the paging ringer immediately sounds, if
activated. When you close the
PTT
switch to transmit, the CTCSS tone pair which is
stored in the Transmitting Pager Memory will be transmitted automatically.
On the paged radio, the squelch will close automatically after the incoming page ends.
Storing the CTCSS Tone Pairs for EPCS Operation
1.
Press the [
F
] key, then press the [
LOW
(
LOCK
)
SET
] key to
enter the Set mode.
2.
Rotate the
DIAL
knob to select Set Mode Item 18:
ECS.CDR
for the Receiving CTCSS Tone Pair or Set Mode Item 19:
ECS.CDT
for the Transmitting CTCSS Tone Pair.
3.
Press the [
F
] key momentarily to enable adjustment of this Set
Mode Item.
4.
Rotate the
DIAL
knob to set the CTCSS
Tone number which corresponds to the first
tone of the CTCSS Tone Pair.
5.
Press the [
(
MHz
)] or [
(
MHz
)] key,
then rotate the
DIAL
knob to set the CTCSS
Tone number which
corresponds to the sec-
ond tone of the CTCSS
Tone Pair.
6.
Press the
PTT
switch to
save the new setting
and exit to normal op-
eration.
CTCSS/DCS/EPCS O
PERATION
Hz
67.0
69.3
71.9
74.4
77.0
79.7
82.5
85.4
88.5
91.5
No.
01
02
03
04
05
06
07
08
09
10
Hz
94.8
97.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
No.
11
12
13
14
15
16
17
18
19
20
Hz
131.8
136.5
141.3
146.2
151.4
156.7
159.8
162.2
165.5
167.9
No.
21
22
23
24
25
26
27
28
29
30
Hz
171.3
173.8
177.3
179.9
183.5
186.2
189.9
192.8
196.6
199.5
No.
31
32
33
34
35
36
37
38
39
40
Hz
203.5
206.5
210.7
218.1
225.7
229.1
233.6
241.8
250.3
254.1
No.
41
42
43
44
45
46
47
48
49
50
CTCSS T
ONE
N
UMBER
T
ONE
S
EARCH
S
CANNING
Summary of Contents for VX-120 Series
Page 56: ...VX 120 OPERATING MANUAL 54 NOTE...
Page 69: ...VX 120 OPERATING MANUAL 67 NOTE...
Page 85: ...VX 120 OPERATING MANUAL 83 NOTE...
